1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b48574236e1e743a8266d45090e64d14bc59550e17b48ddae869e7510093696. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a88b0a8-960e-44a5-8227-bef649a08efb.json and https://artists.proofprofile.net/proofs/artist/0a88b0a8-960e-44a5-8227-bef649a08efb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
House Nation 2013 (DJ Tools Short Version)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853bfd5e05728ced32121011bdb5da5e3b82155b9f96be3dfeef38d494a60dda. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42425686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ca04c33e0c9936df4f812a3c51d01f7a00799449ef04319e2325dd33234cbe. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42425483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845a208d2f10ca5d601c0aa9523db33e1425b1ed7c2e83fbe5c3dd4335c9842b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:31:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42425819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ed0bcc39afa17d7af3c271a50116309e371b311d713b899c8c06208a26075b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42425791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccee83e3cd00ea44c10aef917fd1a1ed050e6edcbeb10826bc4272f49b8cb3fb. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42425418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8b1949b07fe546141539d588881abab7c22565f82224b090fa98a1d457c6f1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42410180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebdd052e03c8a7ccc71279cef3e223e3d064a9197d72a2ee3d37f9971c1f44c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:49:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42599292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c824249b6831d65d714f874421085d5a1dd5ed6963ee467458af0f257852a1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42599474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520a441a792084114caf0f47cf396e9c268804988bd37a4f475f76bca11db1d6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42570681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec6baecf2b5c9081f1b29eca5759a583ceae496411435a975aca14009034b2f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:54:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42570297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f91513b5d8d070e95191accd3ad741d2ea33118e027d1d128cbb09df97cc0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42545655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcc96ee1fcadf8f6967375f4f78a19256493cb9d9c586b4d02eb1164a745320. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42530156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37792aa5686a8df86e2bac33052e9ea8007f96e972f3960fe70fd1da5f91d123. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42530640.